Cryptosporidium is an opportunistic protozoan parasite that can cause severe diarrhoea in immunocompromised patients. Here we report a case of 8 years old male child who was haemophilic admitted with complaints of epistaxis. On routine investigation for epistaxis CBC, HIV, malaria and dengue were done and patient was diagnosed a case of HIV,(malaria ,dengue negative). Parents were HIV negative. FactorVIII was given 3-7times after each episode of injury. As patient was underweight and was malnourished. His stool examination was done which was negative for ovacyston iodine and saline preparation button modified ZN (1%) enormous number of cyst were seen which were microsporidic and cryptosporidium.